shaggyballS

thank you for you knowledge and the fast reply too.

what is the high side and low end price for a used 300x in very good condition I know the are under rated and hard to find

wow thats some info thanks for the input

i have a usa 300x and a usa 400x just trying to get a good grasp of what i have i purchased them new on a spl guys word and dont have much to go on

so old school us amps can produce more watts per channel than the rating shows .....is this correct

were they not rated properly (underrated)

why were they called cheater amps ?